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dc.contributor.authorPeng, B.en_US
dc.contributor.authorLi, G.en_US
dc.contributor.authorLi, D.en_US
dc.contributor.authorDodson, S.en_US
dc.contributor.authorZhang, Q.en_US
dc.contributor.authorZhang, J.en_US
dc.contributor.authorLee, Y. H.en_US
dc.contributor.authorDemir, H. V.en_US
dc.contributor.authorLing, X. Y.en_US
dc.contributor.authorXiong, Q.en_US
dc.date.accessioned2015/07/28en_US
dc.date.accessioned2015-07-28T11:58:55Z
dc.date.available2015-07-28T11:58:55Z
dc.date.issued2013en_US
dc.identifier.citationPeng, B., Li, G., Li, D., Dodson, S., Zhang, Q., Zhang, J., ... & Xiong, Q. (2013). Vertically aligned gold nanorod monolayer on arbitrary substrates: self-assembly and femtomolar detection of food contaminants. ACS nano, 7(7), 5993-6000.en_US
dc.identifier.issn1936-0851en_US
dc.identifier.urihttp://hdl.handle.net/11693/11831
dc.descriptionCataloged from PDF version of article.en_US
dc.description.abstractPublic attention to the food scandals raises an urgent need to develop effective and reliable methods to detect food contaminants. The current prevailing detections are primarily based upon liquid chromatography, mass spectroscopy, or colorimetric methods, which usually require sophisticated and time-consuming steps or sample preparation. Herein, we develop a facile strategy to assemble the vertically aligned monolayer of Au nanorods with a nominal 0.8 nm gap distance and demonstrate their applications in the rapid detection of plasticizers and melamine contamination at femtomolar level by surface-enhanced Raman scattering spectroscopy (SERS). The SERS signals of plasticizers are sensitive down to 0.9 fM concentrations in orange juices. It is the lowest detection limit reported to date, which is 7 orders of magnitude lower than the standard of United States (6 ppb). The highly organized vertical arrays generate the reproducible "SERS-active sites" and can be achieved on arbitrary substrates, ranging from silicon, gallium nitride, glass to flexible poly(ethylene naphthalate) substrates.en_US
dc.language.isoEnglishen_US
dc.source.titleACS Nanoen_US
dc.relation.isversionofhttp://dx.doi.org/10.1021/nn401685pen_US
dc.rightsCopyright © 2013 American Chemical Societyen_US
dc.subjectGold Nanorodsen_US
dc.subjectSelf-assemblyen_US
dc.subjectVertical Monolayeren_US
dc.subjectSurface-enhanced Raman Scatteringen_US
dc.subjectSensorsen_US
dc.subjectPlasticizersen_US
dc.titleVertically Aligned Gold Nanorod Monolayer on Arbitrary Substrates: Self-Assembly and Femtomolar Detection of Food Contaminantsen_US
dc.typeArticleen_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnologyen_US
dc.citation.spage5993en_US
dc.citation.epage6000en_US
dc.citation.volumeNumber7en_US
dc.citation.issueNumber7en_US
dc.identifier.doi10.1021/nn401685pen_US
dc.publisherAmerican Chemical Societyen_US


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